Because he literally controls everything, from http://nymag.com/intelligencer/2019/09/what-happened-at-we-w...

"The S-1 detailed the extent to which Neumann controlled his company, and had benefited personally from his position: he had bought buildings in which WeWork then took out leases, and received $5.9 million in exchange for selling a set of We-related trademarks to his own company. One clause called for Rebekah to name a successor in the event of Adam’s death."

Rebekah is his wife...